pondjs/src/pond/lib/io/eventout.js

A timeseries library build on top of immutable.js

/**
 *  Copyright (c) 2016-2017, The Regents of the University of California,
 *  through Lawrence Berkeley National Laboratory (subject to receipt
 *  of any required approvals from the U.S. Dept. of Energy).
 *  All rights reserved.
 *
 *  This source code is licensed under the BSD-style license found in the
 *  LICENSE file in the root directory of this source tree.
 */

import PipelineOut from "./pipelineout";

class EventOut extends PipelineOut {
    constructor(pipeline, options, callback) {
        super(pipeline);
        this._callback = callback;
    }

    addEvent(event) {
        if (this._callback) {
            this._callback(event);
        } else {
            this._pipeline.addResult(event);
        }
    }

    onEmit(cb) {
        this._callback = cb;
    }

    flush() {
        if (!this._callback) {
            this._pipeline.resultsDone();
        }
    }
}

export default EventOut;